AQA GCSE Combined Science: Trilogy Chemistry Paper 2 (Higher), 2023
Every question from AQA GCSE Combined Science: Trilogy Chemistry Paper 2 (Higher), 2023: 6 questions, 70 marks, each with its mark scheme and topic.
- Question 1 12 marks
Explain the combustion and environmental effects of burning fuels such as methane, petrol and diesel.
Chemistry · C7: Organic Chemistry · C9: Chemistry of the Atmosphere
- Question 2 11 marks
Use chromatography knowledge to identify the stationary phase, explain why substances separate, calculate an Rf value, and describe a paper chromatography method for black ink.
Chemistry · Required Practicals · C8: Chemical Analysis · Chemistry Required Practicals
- Question 3 11 marks
Answer questions on crude oil as a mixture, fractional distillation, cracking, testing for hydrogen, and identifying an alkene formula.
Chemistry · C7: Organic Chemistry · C8: Chemical Analysis
- Question 4 11 marks
Investigate dissolved solids in water samples, calculate a missing mean mass, test whether distilled water is pure, and answer questions about reversible reactions, equilibrium, gas identification, and filtration.
Chemistry · Required Practicals · C3: Quantitative Chemistry · C8: Chemical Analysis · C6: The Rate and Extent of Chemical Change · Chemistry Required Practicals
- Question 5 8 marks
Explain the effects of global climate change, how greenhouse gases cause global warming, and how planting trees reduces global warming.
Chemistry · C9: Chemistry of the Atmosphere
- Question 6 17 marks
Investigate and interpret the rate of decomposition of hydrogen peroxide using different catalysts and a gas syringe graph.
Chemistry · C6: The Rate and Extent of Chemical Change · C5: Energy Changes